61653137527651 has 2 divisors, whose sum is σ = 61653137527652. Its totient is φ = 61653137527650.

The previous prime is 61653137527621. The next prime is 61653137527687. The reversal of 61653137527651 is 15672573135616.

61653137527651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61653137527651 - 2¹⁹ = 61653137003363 is a prime.

It is a super-2 number, since 2×61653137527651² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61653137527601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30826568763825 + 30826568763826.

It is an arithmetic number, because the mean of its divisors is an integer number (30826568763826).

Almost surely, 2^{61653137527651} is an apocalyptic number.

61653137527651 is a deficient number, since it is larger than the sum of its proper divisors (1).

61653137527651 is an equidigital number, since it uses as much as digits as its factorization.

61653137527651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23814000, while the sum is 58.

The spelling of 61653137527651 in words is "sixty-one trillion, six hundred fifty-three billion, one hundred thirty-seven million, five hundred twenty-seven thousand, six hundred fifty-one".